US3543854A - Filtering pipe for well - Google Patents

Filtering pipe for well Download PDF

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Publication number
US3543854A
US3543854A US767672A US76767268A US3543854A US 3543854 A US3543854 A US 3543854A US 767672 A US767672 A US 767672A US 76767268 A US76767268 A US 76767268A US 3543854 A US3543854 A US 3543854A
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US
United States
Prior art keywords
wall
pipe
section
support elements
well
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US767672A
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English (en)
Inventor
Wilhelm Degen
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Individual
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Individual
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Filing date
Publication date
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Publication of US3543854A publication Critical patent/US3543854A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/08—Screens or liners
    • E21B43/082—Screens comprising porous materials, e.g. prepacked screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2101/00—Types of filters having loose filtering material
    • B01D2101/005—Types of filters having loose filtering material with a binder between the individual particles or fibres

Definitions

  • the present invention relates to filtering pipes or casings for artesian wells.
  • Such casings may consist of such granular materials as gravel bonded together by such adhesives as synthetic resin or vulcanized rubber, and may be reinforced with suitable support elements to prevent bending.
  • Artesian wells are usually constructed by first sinking a shaft of sufficient diameter, than placing a slitted filter pipe into the shaft, and finally pouring gravel between the shaft wall and the pipe. Although relatively. simple, building of deep wells of this type is relatively difficult and requires expert labor. For this reason, a variety of prefabricated filtering pipes for wells have been proposed. It is an object of this invention to provide an improved filter pipe section for well casings.
  • This object is accomplished by embedding a plurality of elongated support elements in the tubular wall of the pipe, with the support elements extending parallel to the axis of the pipe and being uniformly distributed within the wall. This provides minimal dimensioning and maximum filtering effect.
  • FIG. 1 is a perspective side view of an artesian well filter pipe
  • FIGS. 2 to 4 are cross sections of the wall of the pipe showing different embodiments of support elements.
  • the filter pipe is shown to comprise filter pipe section 1 having end flanges 2 to enable the pipe section 1 to be attached to like pipe sections fonning the filter pipe of an artesian well.
  • each filter pipe section may be relatively long, requiring only a few flange connections between adjacent sections even in a relatively deep well.
  • the tubular wall 4 of the filter pipe sections consists of a water permeable, bonded mass of gravel wherein the elongated support elements 3 are embedded, i.e. the wall is not constituted by support elements carrying filter plates therebetween as has been conventional.
  • each filter pipe section is a self-supporting filter pipe consisting of a suitable granular material, such as gravel, which is bonded by a suitable adhesive substance, such as a synthetic resin or vulcanizable rubber, to form a water permeable wall.
  • a suitable granular material such as gravel
  • a suitable adhesive substance such as a synthetic resin or vulcanizable rubber
  • the elongated support elements 4 are of T-shaped cross section, being so embedded in the pipe wall that the cross bar 9 of each T-section is flush with the outer surface 5 of the wall while the other bar of the T-section points inwardly towards the axis of the pipe section, see FIG. 4.
  • Extending the other T-section bar of the support elements substantially to the center line 6 of the pipe section wall is particularly advantageous because the flow section tapers a the sup e minimum towards the inner surface 11 of the wall and the pipe axis (see broken line conus in FIG. 4). This causes the radially extending section 11 behind the support elements to have a maximum extension.
  • FIG. 2 shows a support element 7 of substantially square cross section, with the flow lines again indicated in broken lines.
  • FIG. 3 shows another advantageous form of a support element 8 of elongated, rectangular cross section. These elements are radially arranged withing the pipe section wall, the center line 6 of the wall substantially bisecting the length of rt elements. In a mbodiments, the support elements are completely, or
  • the filtering wall and its support constitutes a unitary tubular body, the built-in sup port elements serving to prevent bending of the filtering mass in any direction. Outward bending is prevented by the soil surrounding the pipe section.
  • the support elements may be relatively small since, being parallel to the filter pipe line, they need to support only the tensile load and are not subjected to a bending element.
  • the filtering mass of the wall and the support elements complement each other in supporting the loads to which the pipe sections are subjected, the relatively small section of the support elements correspondingly increasing the cross section of the water permeable filter wall.
  • a pipe section for a filtering pipe for a well comprising:
  • a water permeable tubular wall having an axis and comprised of gravel bonded by a synthetic resin or vulcanizable rubber adhesive;

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Filtering Materials (AREA)
  • Filtration Of Liquid (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Sewage (AREA)
US767672A 1967-10-17 1968-10-15 Filtering pipe for well Expired - Lifetime US3543854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT936467A AT273171B (de) 1967-10-17 1967-10-17 Filterstrang für Rohrbrunnen

Publications (1)

Publication Number Publication Date
US3543854A true US3543854A (en) 1970-12-01

Family

ID=3613506

Family Applications (1)

Application Number Title Priority Date Filing Date
US767672A Expired - Lifetime US3543854A (en) 1967-10-17 1968-10-15 Filtering pipe for well

Country Status (7)

Country Link
US (1) US3543854A (de)
AT (1) AT273171B (de)
BE (1) BE722336A (de)
DE (1) DE1800852A1 (de)
ES (1) ES359186A1 (de)
FR (1) FR1588429A (de)
NL (1) NL6814691A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399889A1 (de) * 1989-05-23 1990-11-28 Schlumberger Limited Verfahren und Vorrichtung mit einem Filter zur Probenahme und zum Testen einer Formation und Verfahren zur Herstellung eines solchen Filters
US5664628A (en) * 1993-05-25 1997-09-09 Pall Corporation Filter for subterranean wells
US6684945B1 (en) 2002-02-20 2004-02-03 In-Well Technologies, Inc. Air filter for a well
US20050226751A1 (en) * 1999-10-27 2005-10-13 In-Well Technologies, Inc. Water pressure system with pressure tank installed within well casing of well
US7013924B1 (en) 2003-11-17 2006-03-21 In-Well Technologies Inc. Fluid pressure system including free floating bladder
US20060144455A1 (en) * 2003-11-17 2006-07-06 Meyers Kenneth A Fluid pressure system including free floating bladder
US8875784B2 (en) * 2012-02-13 2014-11-04 Halliburton Energy Services, Inc. Economical construction of well screens

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348463A4 (de) * 1987-10-29 1990-03-08 Patent Company The Filterkiesfüllung für erdöl-bohrlöcher oder wasserbrunnen.

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399889A1 (de) * 1989-05-23 1990-11-28 Schlumberger Limited Verfahren und Vorrichtung mit einem Filter zur Probenahme und zum Testen einer Formation und Verfahren zur Herstellung eines solchen Filters
US5664628A (en) * 1993-05-25 1997-09-09 Pall Corporation Filter for subterranean wells
US5909773A (en) * 1993-05-25 1999-06-08 Pall Corporation Method of repairing a damaged well
US20050226751A1 (en) * 1999-10-27 2005-10-13 In-Well Technologies, Inc. Water pressure system with pressure tank installed within well casing of well
US7093651B2 (en) 1999-10-27 2006-08-22 In-Well Technologies, Inc. Water pressure system with pressure tank installed within well casing of well
US6684945B1 (en) 2002-02-20 2004-02-03 In-Well Technologies, Inc. Air filter for a well
USRE41507E1 (en) * 2002-02-20 2010-08-17 In-Well Technologies, Inc. Air filter for a well
US7013924B1 (en) 2003-11-17 2006-03-21 In-Well Technologies Inc. Fluid pressure system including free floating bladder
US20060144455A1 (en) * 2003-11-17 2006-07-06 Meyers Kenneth A Fluid pressure system including free floating bladder
US7255133B2 (en) 2003-11-17 2007-08-14 In-Well Technologies, Inc. Fluid pressure system including free floating bladder
US8875784B2 (en) * 2012-02-13 2014-11-04 Halliburton Energy Services, Inc. Economical construction of well screens

Also Published As

Publication number Publication date
ES359186A1 (es) 1970-06-16
FR1588429A (de) 1970-04-10
BE722336A (de) 1969-03-14
NL6814691A (de) 1969-04-21
AT273171B (de) 1969-08-11
DE1800852A1 (de) 1971-06-03

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